XML Validator
Verify that your XML code is well-formed and follows W3C syntax standards. This tool identifies errors such as unclosed tags or unquoted attributes and provides line-by-line diagnostics for fast debugging.
Verify that your XML code is well-formed and follows W3C syntax standards. This tool identifies errors such as unclosed tags or unquoted attributes and provides line-by-line diagnostics for fast debugging.
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Tip
Always wrap your XML content in a single root element to ensure it is well-formed.
Did You Know?
XML is case-sensitive, meaning <Tag> and <tag> are treated as completely different elements.
Best Practice
Use the XML Formatter after validating to make the document structure easier for humans to read.
Q: What does well-formed mean in XML? A: It means the XML follows the basic syntax rules, such as having a single root element and correctly nested tags.
Q: Why is my XML failing even though it looks correct? A: XML is case-sensitive; verify that your opening tag exactly matches the case of your closing tag.
Q: Can this tool check against an XSD schema? A: This tool focuses on syntax and well-formedness. Schema-specific validation is handled by specialized XSD processors.